﻿using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        //我说一个方式，递归。
        //A（n）表示全排列的集合，A（n） = 



    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string param = Request.RawUrl;
        Response.Redirect(param + ((param.IndexOf("?") > 0) ? "&":"?" )+ "pageindex=" + param);
        Response.End();
    }
}
